ROCKVILLE, Md.--(BUSINESS WIRE)--Rexahn Pharmaceuticals, Inc. (NYSE Amex:RNN), a clinical stage pharmaceutical company commercializing potential best in class oncology and CNS therapeutics, today announced that Dr. Chang Ahn, Rexahn’s Chief Executive Officer, will present at the NASDAQ MarketSite in Times Square, New York City, NY on Tuesday, April 13, 2010 at 12:30 PM EDT.